//
//  NSNull+SMCategory.m
//  ZhiBo
//
//  Created by huangtie on 2017/11/17.
//  Copyright © 2017年 huangtie. All rights reserved.
//

#import "NSNull+SMCategory.h"

@implementation NSNull (SMCategory)
- (NSInteger)length
{
    return 0;
}

- (NSInteger)count
{
    return 0;
}
@end
